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Submission #423597

# Submission time Handle Problem Language Result Execution time Memory
423597 2021-06-11T10:09:47 Z arayi Ancient Books (IOI17_books) C++17
0 / 100
 780 ms 1048580 KB 
#include "books.h"
#include <bits/stdc++.h>
#define lli long long
#define ad push_back
#define fr first
#define sc second
#define MP make_pair
using namespace std;

const int N = 1e6 + 30;

int i1, n;
int col[N], a[N], p[N];
int gp(int x)
{
    if(p[x] == x) return x;
    return p[x] = gp(p[x]);
}
vector<pair<lli, pair<int, int> > > fp;
lli ans;
int dfs(int v)
{
    col[v] = i1;
    if(!col[a[v]]) return max(v, dfs(a[v]));
}
long long minimum_walk(vector<int> p, int s)
{
	n = p.size();
	for(int i = 0; i < n; i++) a[i] = p[i], ans += abs(a[i] - i), ::p[i] = i;
	int nx = 0;
	for(int i = 0; i < n; i++)
    {
        if(a[i] == i) continue;
        if(!col[i])
        {
            ans += 2*max(0, (i - nx));
            i1++;
            nx = max(nx, dfs(i));
        }
    }
    return ans;
}

Compilation message

books.cpp: In function 'int dfs(int)':
books.cpp:25:1: warning: control reaches end of non-void function [-Wreturn-type]
   25 | }
      | ^

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 780 ms 1048580 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 780 ms 1048580 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #3
0 / 28.0

# Verdict Execution time Memory Grader output
1 Runtime error 780 ms 1048580 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Runtime error 722 ms 1048580 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #5
0 / 30.0

# Verdict Execution time Memory Grader output
1 Runtime error 780 ms 1048580 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -